Assig-istoe of one-third



B. P. RIX.

(No Model.)

HARBOW. I

Patented Nov. 6, 1883.

N. PTERS. Pmummhu n her. Wash'mglun. ac,

UNITED STATES PATENT @FFIGE.

BENJAMIN F. RIX, OF KALAMAZOO, MICHIGAN, ASSIGNOR OF ONE-THIRD TO MARY H, KIPP, OF SAME PLACE.

HARROW}.

SPECIFICATION forming part of Letters Patent No. 287,965, dated November 6, 1883, Application filed May 19, 1883. (No model.) i

.TO 02513 whom itmwy concern:

Be it known that I, BENJAMIN F. RIX, a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan,

5 have invented a new and useful Harrow, of

which the following is a specification,

My invention has for its object certain improvements in barrow-teeth, and in the means for connecting them with the frame.

In the drawings forminga part of this specification, Figure l isa side elevation;-Fig. 2-, a side elevation of a diiferently-constructed tooth, introduced for the purpose hereinafter explained; Figs. 3 and t, broken-portions enlarged, showing a front and rear view in perspective; Fig. 5, a section on line 2 2 in Fig. =1 in perspective.

The hinged supporting-bar c, with which the tooth is connected, is made all in one piece-that is, the upright part, with which the tooth. is connected by abolt, e, is provided with an integrally-formed base consisting of the hinging-eyes-t t and the loop 22, which surrounds the tooth. The bar 0 is hinged to the frame B, in the usual manner, by bolt n. Such a construction is easily and cheaply made, compared with former tooth-supports, and the operation of connecting the tooth therewith greatly facilitated.

In constructing the tooth D a portion of the bowa little above the lower end is formed vertically concaved fromthe rear side, with.

the front edge or apex, a, of the convex side describing a straight line, .Fig. 1, while the curved configuration of the edges remains the same throughout,as in abowed tooth not having the improvement, Figs. 1 and 2.; The lower or working end of the tooth is notconvexed. The tooth receives its elastic eifect from thespring on rod A. Many useful results are attained in the operation-of such a tooth, aside from ease in draft and beneficial v effects onthe soil, a prominent one of which is that the tooth, when intercepting a root or 4 5 obstruction,w,swings back and upward quicker the root a".

and farther during a given movement of the harrow than a tooth having a like bow, Fig.

2, without the improvement inFig. 1. The same forward movement oftheharrow is shown in each of these figures, the dotted position 5c showing the normal condition of-the parts when at rest, with the tooth having just met Said root is located at the same vertical distance below the harrow-frame B.

The difference in upward swing of the teeth 55,

is illustrated by the difference in distance between the dotted line at?" and the dotted end i. When the harrow in each figure is moved on ahead, the tooth in Fig. 2 will hang to the root :0, while the tooth in Fig. 1 will continue to swing up until the working end is met, when, owing to the angle of the bow at that time, it will readily pass over the root.

Having thus described my invention, what I claim is- 1. In a barrow, a tooth-support consisting of the flatupright portion, provided with a base integrally. formed therewith, said base having the two lugs on one side horizontally perforated, and the loop on the other side having a vertical opening, substantially as set forth. a

2. A bowed barrow-tooth having the convexed portion on the inner'side of the bow, above the working end, the apex thereof de- 7 5 scribing a straight line,.substantially as described.

- 3. A bowed tooth vertically concaved from the rear, above the working end, forming a convex portion on the inside of said how, the apex of which" is straight, while the curve of the edges of the bow is undisturbed, substantially as specified and shown.

In testimony of the foregoing I have hereunto subscribed my name in the presence of two witnesses. u

BENJAMIN FRANKLIN RIX.

\Vitnesses:

JOHN H. CHASE, N. O. NnTEBRooK. 

